某些腕足动物与喇叭孔珊瑚的古生态关系

作者根据晚泥盆世在地层中喇叭孔珊瑚在宿主腕足动物壳体上的生长方向、位置及其它状态等的具体分析,判断两者是生前共生还是死后附生。通过对某些腕足动物及其壳体上附着的珊瑚生长阶段、生长方向的分析,恢复了Cyrto-spirifer,Cyrtiopsis,Tenticospirifer及Yunnanellina等属的有利生活方位并验证其固着方式。文中还探讨造成腕足动物贝体两侧不对称的病理性失调和贝体死亡原因。作者认为古生态学的研究应包括古代生物在其被埋藏前的生活状态,居住环境,病理现象及死后的遭遇等全部过程。

PALEOECOLOGICAL RELATIONSHIP BETWEEN SOME BRACHIOPODS AND AULOPORIDS

The present paper elucidates some paleoecologic relationship between Devonianbrachiopods and auloporids. Six basic types are described. Our specimens on handwere collected from upper Devonian of Central Hunan. According to their growth-direction and position, we can decide that theauloporids and brachiopods are commensalism or parasitism. If they werecommensalism, it means that they would habituate themselves to a common environ-ment. If they were parasitism, it indicates that the auloporids would be attached to thebrachiopods after their death. It is worthy to note that the attachment of auloporid may display a pathologicdisorder on the brachiopod-shells, such as the interruption of costa or bilateralasymmetry of the valve. Paleoecologic researches (s. lat.) consider a question in all its aspects e.g,thegeneses, prosperities, reductions, patholagic disorders and mortalities, or even themorphologic function, biota, habitats and taphocoenose of the ancient organisms.